KR20070031798A - 2 How to share network resources among network service providers - Google Patents

Abstract

The present invention relates broadly to an ALL-IP wireless network. The present invention relates to a method of sharing network resources among other service providers in the same area using mobility management techniques. Hereinafter, specific steps constituting the method will be described. In the Access Router, AR1, (a) transmitting an RI (Redirect Initiate) message to AR2 if the subscriber's call cannot be processed due to an overload; (b) the subscriber generating a new address for use in AR2; (c) sending a Router Advertisement for the redirect to the subscriber (or mobile node (MN)) after receiving a RIACK (Redirect Initiate Acknowledgement) and (d) MN / AR2 Receiving a transmission request (Notify) from the subscriber and transmitting the buffered packet to the subscriber via the AR2, the mobile node (or subscriber), MN (1) RAR (Router Advertisement for Redirect) (Router Advertisement for Redirect)) and attempting to L2 association (Layer 2 association) with AR2; (2) transmitting the address included in the RAR message received from the AR1 to the AR2 together with the Fast Neighbor Advertisement (FNA), and (3) sending a Notify message to the AR1 after receiving authentication from the AR2. When the (A) RI is received in the access router AR2, the transmitting router examines the uniqueness of the address mentioned in the RI message, and if the address is not unique, searches for a unique address again. step; (B) transmitting to AR1 a unique address that the subscriber can use in the AR2 network with a RIACK message; (C) processing the FNA message from the subscriber and authenticating the subscriber; (D) If authentication is successful, transmitting an acknowledgment (ACK) to the subscriber (MN) and (E) transmitting a Notify message to AR1 are performed.

Description

2 method for sharing network resources between two network operators}

1 shows an overview of the deployment of an IP network for two service providers.

FIG. 2 shows specific operations of a method in which a router AR1 of one service provider switches its subscriber to router AR2 of another service provider when its resources are exhausted.

3 shows an operation in which AR1 switches a subscriber's call to AR2.

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

1.CN: Correspondent Node

AAA: Authentication, Authorization and Accounting Server

3.SP: Service Provider

2.AR: Access Router

4.HA: Home Agent

5.MN: Mobile Node

6.L2: Layer 2

7.RAR: Router Advertisement for Redirect

8.FNA: Fast Neighbor Advertisement

9.RI: Redirect Initiate

The present invention relates generally to an ALL-IP wireless network, and more particularly to a method of sharing network resources between two network service providers. The present invention provides a method for helping to share network resources of another service provider when the network resources of one service provider in the same area are exhausted.

There is no prior art regarding an ALL-IP wireless network. An ALL-IP wireless network means that IP protocol is used for end-to-end in a network. All information (voice, video and data) is transmitted by the IP protocol, while current wireless networks use circuit switching for voice and IP for data. In current wireless networks, end-to-end IP is not used. Some service providers (or operators) use IP within the core networks of their networks. In such a conventional network, service providers (SPs) share network resources of other service providers in the form of roaming when they leave their service area. The service provider has a pre-relation with the service provider (or operator) in that area for other service areas for this purpose.

Conventionally, in ALL-IP networks, if a service provider has exhausted its resources, the service provider cannot provide services to its subscribers.

Related documents in which matters relating to the present invention are described include the following.

1) Deering S. and R. Hinden, "Internet Protocol, Version 6 (IPv6) Specification", RFC 2460, December 1998.

2) D. Johnson, C. Perkins and J. Arkko, "Mobility Support in IPv6", RFC 3775, June 2004.

3) Rajeev Koodli, "Fast Handovers for Mobile IPv6", draft-ietf-mipshop-fast-mipv6, October, 2004.

In order to solve the above-mentioned problems of the related art, a service provider provides a method for providing services to subscribers using network resources of another service provider in the same region even when the network resource is exhausted.

In order to solve the above technical problem, a method of sharing network resources between two network service providers according to the present invention will be described.

The mobile network elements that make up the ALL-IP network are IP enabled. IP networks use different kinds of techniques to handle mobility management. An important object of the present invention is to provide a method of sharing network resources when another service provider has exhausted its resources. The method treats changes in service providers as mobility issues and allows subscribers to communicate using resources from other service providers.

The present invention must satisfy the following criteria. First, service providers should be able to provide services to their subscribers even when their resources are exhausted, using the resources of other pre-scheduled service providers. Implementation of this method requires only minimal changes at the end of the service providers. This method can also be interoperable with existing standards and should be simple and easy to deploy.

The present invention helps service providers to share network resources with other service providers in the same coverage area. If the subscriber is attempting to make a call but the subscriber's service provider network is unable to handle the call (e.g. network overload), the call is directed to the service provider and another agreed upon service provider. Is switched.

Configuration information is provided to the subscriber and the subscriber is used to connect to other service providers. In the mobility problem, bandwidth sharing is a problem, and as a result, mobile IP techniques will be used for communication with other correspondent nodes using existing addresses / numbers.

As described above, the present invention relates to a method of sharing network resources among other service providers in the same area using mobility management techniques. Hereinafter, specific steps constituting the method will be described.

In Access Router, AR1

(a) sending a Redirect Initiate (RI) message to AR2 if it is overloaded and the subscriber's call cannot be processed;

(b) the subscriber generating a new address for use in AR2;

(c) sending a Router Advertisement for the redirect to the subscriber (or mobile node (MN)) after receiving the RIACK (Redirect Initiate Acknowledgement);

(d) receiving a Notify request from the MN / AR2, and then transmitting the buffered packet to the subscriber via the AR2,

Mobile Node (or Subscriber), in MN

(1) processing RAR (Router Advertisement for Redirect) and attempting L2 association with AR2;

(2) transmitting the address included in the RAR message received from the AR1 together with the Fast Neighbor Advertisement (FNA) to the AR2; and

(3) after receiving authentication from AR2, a step of transmitting a Notify message to AR1 is performed;

Access Router, AR2

(A) upon receipt of the RI examine the uniqueness of the address mentioned in the RI message and if the address is not unique then retrieve the unique address again;

(B) transmitting to AR1 a unique address that the subscriber can use in the AR2 network with a RIACK message;

(C) processing the FNA message from the subscriber and authenticating the subscriber;

(D) if the authentication is successful, sending an acknowledgment (ACK) to the subscriber (MN); and

(E) A step of transmitting a Notify message to AR1 is performed.

When the resource of the service provider's router AR1 is exhausted, the AR1 switches the subscriber to the router AR2 of another service provider. The subscriber receives a Router Advertisement for Redirect (RAR) message and then performs an AR2 and L2 association (Layer 2 Association). AR2 sends an acknowledgment (ACK) to the subscriber that the communication may be initiated after authentication.

When AR2 sends an acknowledgment (ACK) to the subscriber to initiate communication, the subscriber sends a message for route optimization to its Home Agent (HA) and corresponding nodes (CNs). Update for a new Care of Address (CoA) (also known as a Binding Update). If AR1 wishes to divert the subscriber's call to AR2, AR1 calculates a new address available to the subscriber in AR2 and then sends the new address and security parameters along with a Redirect Initiate (RI) message. send (security pARameters) to AR2 AR2 will check the uniqueness of the address and if not the only address will retrieve the new and unique address for the subscriber again. AR2 then sends a RIACK (Redirect Initiate Acknowledgement) message to AR1. After receiving the RIACK, AR1 updates the subscriber with details of the new router and address to use under the new service provider (SP).

After the update procedure for the subscriber (or mobile node), AR1 starts to buffer the packet to send to the mobile node (MN) and when MN / AR2 sends a Notify message of the buffered packet, AR1 sends the packet to the mobile node. Send it. Processing the call of the subscriber and switching to another service provider includes the mobile node (or subscriber) connecting to AR1 and attempting to make a call and determining if the call can be handled by AR1. . AR1 transmits configuration information necessary for RAR and AR2 together to the mobile node.

After receiving the RAR, the mobile node determines whether it should move to another router AR2. After setting up a new IPv6 and security association, it sends a Fast Neighbor Advertisement (FNA) to AR2 to access AR2. The AR2 receiving the FNA challenges the request of the mobile node in the L2 association (Layer 2 association) or the L3 connection (Layer 3 connectivity) using PANA (Protocol for Carrying Authentication for Network Access (RFC 4058)). ).

After authentication, AR2 acknowledges the connection by sending an FNA Acknowledge (ACK) message. The Mobile 6 address and Security association node may begin communication after receiving the authorization. The mobile node MN uses MIPv6 to inform its home agent HA and corresponding nodes CN of its new IPv6 address.

Processing the call of the subscriber and switching to another service provider includes the mobile node (or subscriber) connecting to AR1 and attempting to make a call and determining if the call can be handled by AR1. .

AR1 generates a probable address that can be used in AR2 for the mobile node and sends it with a Redirect Initiate message. AR2 sends a Redirect Initiation Acknowledgment (RIACK) if the new address is unique. If the address proposed by AR1 is not unique in a new link, AR2 will send another available new address. AR1 sends to the mobile node RAR (Router Advertisement for Redirect), configuration information required in AR2 and an address to be used in the new service provider's network. AR1 will begin to buffer packets for the mobile node. After receiving the RAR, the mobile node determines if it should move to another access router AR2. It then establishes a security association with a new IPv6 address and sends a Fast Neighbor Advertisement (FNA) to AR2 for access to AR2. After authentication, AR2 accepts the connection by sending an FNA acknowledgment (ACK) to the mobile node. The mobile node can begin communication after receiving the approval. The MN / AR2 sends a buffered packet transfer request to AR1 to cause AR1 to send a packet to the mobile node via AR2. AR1 sends all buffered packets to the mobile node.

Other objects, features and advantages of the invention will be apparent from the following detailed description and the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below should be understood as exemplary embodiments of the present invention and the present invention may be embodied in various forms in addition to the above embodiments. The following detailed description and drawings should not be construed as limiting the scope of the invention. In addition, many specific details are provided to aid in an accurate understanding of the present invention and to provide a basis for the claims and to enable a person skilled in the art to easily produce or manufacture the present invention. However, in order to not obscure the subject matter of the present invention, descriptions of well-known or conventional technologies are omitted in some cases.

The present invention proposes a method of sharing network resources between two network service providers. 1 shows an overview of network deployment for the method. Sharing resources from other service providers is considered a mobility issue and handled appropriately.

The two Service Providers (SPs) must agree in advance to mutually agree to share network resources of each other or to unilateral agreement in which only one SP A uses the other SP B. do. SP A must set configuration information in its network. The configuration information includes a prefix to be used in AR2, security related information, and the like.

1 shows an overview of an IP network deployment comprising two service providers (SPs). The two service providers cover the same geographic area. SP A and SP B refer to the service providers (or operators). A Mobile Node (MN) is a subscriber of SP A. The subscriber will be converted to SP B using the concept of mobility and will use the resources of SP B.

FIG. 2 shows specific operations of a method in which a router AR1 of a service provider switches its subscriber to router AR2 of another service provider when its resources are exhausted. The subscriber receives a Router Advertisement for Redirect message (RAR) and then performs an L2 association (Layer 2 Association) with AR2. AR2 sends an acknowledgment (ACK) to the subscriber that the communication may be initiated after authentication. The subscriber updates its Home Agent (HA) and its Correspondent Node (CN) with a new Care of Address (CoA) for route optimization (binding update). : Binding Update).

3 shows an operation in which AR1 transfers a subscriber's call to AR2 to AR2. AR1 calculates a new address that the subscriber can use in AR2 and then sends the new address and security parameters to the AR2 with a Redirect Initiate (RI) message. AR2 will review the uniqueness of the address and if it is not the only address, will retrieve the new and unique address again for the subscriber. AR2 then sends a Redirect Initiate Acknowledgment (RIACK) message to AR1. do. After receiving the RIACK, AR1 updates the subscriber with details of the new router and address to use under the new service provider (or SP). AR1 starts to buffer the packet to send to the mobile node (MN) and AR1 sends a packet to the mobile node when MN / AR2 sends a packet transfer request message.

Hereinafter, an operation of switching to another service provider by processing a call of a subscriber will be described in detail with reference to FIG. 2.

First, the mobile node (or subscriber) connects to AR1 and attempts to make a call. AR1 determines if it can handle the call. AR1 transmits configuration information necessary for RAR and AR2 together to the mobile node. After receiving the RAR, the mobile node determines whether it should move to another router AR2. It then establishes a security association with a new IPv6 address and sends a Fast Neighbor Advertisement (FNA) to AR2 for access to AR2. After receiving the FNA, the AR2 challenges the mobile node's request using a PANA in a Layer 2 association or Layer 3 connectivity. Then contact SP A's AAA server (if manually set up) or SP A's AAA server (Authentication, Authorization and Acconting server). After authentication, AR2 acknowledges the connection by sending an FNA acknowledgment (ACK). The mobile node can begin communication after receiving the approval. The mobile node uses MIPv6 to notify its home agent and corresponding nodes of its new IPv6 address.

Referring to Figure 3 will be described step by step for the operation of handling the call (call) of the subscriber to switch to another service provider.

First, the mobile node tries to call AR1. Determines whether AR1 can handle the call on its own. AR1 generates a probable address that the mobile node can use in AR2 and transmits it with a Redirect Initiate message. AR2 sends a Redirect Initiation Acknowledgment (RIACK) if the new address is unique. If the address proposed by AR1 is not unique in a new link, AR2 will send another available new address. AR1 sends a mobile node RAR (Router Advertisement for Redirect), configuration information required in AR2, and an address to be used in the new service provider's network. AR1 will begin to buffer packets for the mobile node. After receiving the RAR, the mobile node determines if it should move to another access router AR2. After establishing a security association with a new IPv6 address, FNA (Fast Neighbor Advertisement) is sent to AR2 to access AR2. After authentication, AR2 acknowledges the connection by sending an FNA acknowledgment (ACK). The mobile node can begin communication after receiving the approval. MN / AR2 sends a packet transfer request (notify) to AR1 causing AR1 to send the packet to the mobile node via AR2. AR1 sends all buffered packets to the mobile node.

So far I looked at the center of the preferred embodiment for the present invention.

Since the method and process for producing and using the present invention are described completely, clearly and concisely in the present specification, those skilled in the art can easily produce and use the present invention.

  In addition, it will be understood by those skilled in the art that the present invention may be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

The service provider can use the resources of other service providers to provide services to their subscribers when their network resources are exhausted. Of course, the service provider must have agreed on resource sharing with other service providers in advance.

The method helps one service provider to provide services to more subscribers in a particular area using resources of another service provider.

The method is not in violation of existing standards.

The method is easy to implement and can be implemented without major changes to existing physical configurations.

Claims (20)

In sharing network resources among other service providers in the same area using mobility management techniques, In access router AR1 (a) sending a redirect initiation message to another access router AR2 if it is overloaded and unable to process the call of the mobile node; (b) the mobile node generating a new address for use in AR2; (c) sending a router advertisement for the redirect to the mobile node after receiving the redirect initiation acknowledgment; and (d) after receiving the request for transmission from the mobile node / AR2, transmitting the buffered packet to the mobile node via AR2, In a mobile node (1) processing the Router Advertisement for the redirect and attempting to combine L2 with L2; (2) sending to AR2 the address included in the Router Advertisement message for the redirect received from AR1 along with the rapid neighbor advertisement; (3) after receiving authentication from AR2, transmitting a transmission request message to AR1, In access router AR2 (A) upon receiving the redirect initiation, checking the uniqueness of the address mentioned in the redirect initiation message and if the address is not unique, searching again for a unique address; (B) transmitting to AR1 a unique address that the mobile node can use in the AR2 network with a redirect initiation acknowledgment message; (C) processing the prompt neighbor advertisement message from the mobile node and authenticating the mobile node; (D) if the authentication is successful, sending an acknowledgment to the mobile node; and (E) A method for sharing network resources between two network service providers, characterized in that the step of transmitting a transmission request message to AR1 is performed. 2. The method of claim 1, wherein when the resources of router AR1 of the service provider are exhausted, AR1 switches the mobile node to router AR2 of another service provider. . 2. The method of claim 1, wherein the mobile node performs L2 association with AR2 after receiving a Router Advertisement message for redirect and AR2 sends an acknowledgment to the mobile node that it may initiate communication after authenticating with the mobile node. A method for sharing network resources between two network service providers. 4. The method of claim 3, wherein when the AR2 sends an acknowledgment that the mobile node may initiate communication, the mobile node updates its home agent and corresponding nodes with a new secondary address for path optimization. How to share network resources among network service providers. 5. The method of claim 4, wherein when AR1 wants to switch the call of the mobile node to AR2, AR1 calculates a new address that the mobile node can use in AR2 and then sends the new address and security parameters to AR2 with a redirect initiation message. And sharing network resources between the two network service providers. 6. The method of claim 5, wherein the AR2 examines the uniqueness of the address and if not is the only address, retrieves a new and unique address for the mobile node again. 7. The method of claim 6, wherein after receiving the redirect initiation grant, AR1 updates the mobile node with details of a new router and address to use under a new service provider. Way. 8. The method of claim 7, wherein after the update procedure for the mobile node, AR1 begins to buffer packets to be transmitted to the mobile node, and when the mobile node / AR2 sends a request message for the buffered packet, the AR1 transmits the packet to the mobile node. And sharing network resources between the two network service providers. 9. The method of claim 8, wherein processing the mobile node's call and diverting to another service provider comprises the mobile node connecting to AR1 and attempting to make a call and determining if the call can be handled by AR1. And sharing network resources between the two network service providers. 10. The method of claim 9, wherein the AR1 transmits a router advertisement for the redirect and necessary configuration information in the AR2 to the mobile node, and the mobile node should move to another router AR2 after receiving the router advertisement for the redirect. A method of sharing network resources between two network service providers, characterized in that after determining, establishes a new IPv6 and security association and sends a quick neighbor advertisement to access AR2. 12. The method of claim 10, wherein the AR2 receiving the quick neighbor advertisement examines the request of the mobile node using PANA in L2 association or L3 connection. 12. The method according to claim 11, wherein after authentication, the AR2 grants the connection by sending a quick neighbor advertisement approval message, the mobile node starts communication after receiving the approval, and the mobile node (MN) uses MIPv6 to inform the home agent and corresponding nodes. A method of sharing network resources between two network service providers, characterized by advertising their new address. The method of claim 1, wherein processing the call of the mobile node and diverting to another service provider comprises the mobile node connecting to AR1 and attempting to call and determining if the call can be handled by AR1. A method for sharing network resources between two network service providers. 15. The method of claim 13, wherein AR1 generates a new address that can be used in AR2 for the mobile node, and then sends a Redirect Initiate message and the candidate address together, and AR2 redirects after checking whether the new address is unique. Sharing network resources between the two network service providers. 15. The method of claim 14, wherein if the address proposed by AR1 is not unique in a new connection, then AR2 sends another available new address. 16. The method of claim 15, wherein AR1 transmits a router advertisement for a redirect, configuration information required in AR2, and an address to be used in a network of a new service provider to a mobile node, and AR1 buffers a packet for the mobile node. How to share network resources among network service providers. 17. The method of claim 16, wherein after receiving the RAR, the mobile node determines if it should move to another access router AR2, establishes a new IPv6 address and security association, and then sends a quick neighbor advertisement to AR2 to connect to AR2. A method for sharing network resources between two network service providers. 18. The method of claim 17, wherein after authentication, the AR2 grants the connection by sending a quick neighbor advertisement acknowledgment to the mobile node and the mobile node initiates communication after receiving the approval. . 19. The method of claim 18, wherein the mobile node / AR2 sends a buffered packet transfer request to AR1, causing AR1 to send the packet to the mobile node via AR2, and AR1 transmits all buffered packets to the mobile node. 2 sharing network resources between network service providers. A method of sharing network resources among other service providers in the same area using mobility management techniques as described in the accompanying drawings.

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