WO2015109536A1

WO2015109536A1 - Method, apparatus and system for controlling route optimization

Info

Publication number: WO2015109536A1
Application number: PCT/CN2014/071393
Authority: WO
Inventors: 熊春山; 刘建宁
Original assignee: 华为技术有限公司
Priority date: 2014-01-24
Filing date: 2014-01-24
Publication date: 2015-07-30
Also published as: CN105122854B; CN105122854A

Abstract

Embodiments of the present invention relate to the field of communications. Disclosed are a method, an apparatus and a system for controlling route optimization, which can implement control of a route optimization channel of distributed mobility management. A specific scheme comprises: a first apparatus obtaining first route control information, the first apparatus being a home location manager (HLM) of an MN or a home mobile router (HMR) of the MN, and the first route control information being used for instructing to remove an RO channel; and the first apparatus sending the first route control information to a CMR the MN is attached to or a CMR a CN is attached to, so that the CMR the MN is attached to or the CMR the CN is attached to removes the RO channel. The present invention is used for controlling a route optimization channel of distributed mobility management.

Description

Method, device and system for controlling route optimization

The present invention relates to the field of communications, and in particular, to a method, apparatus, and system for controlling route optimization.

Background technique

In a distributed mobility management (DMM) system, a mobile router (referred to as MN) mobile router (mobile router, abbreviated as MR) and communication is established by using a route optimization (RO) function. The shortest possible routing path between the MRs of the correspondent node (CN) (ie, the route optimization channel) can avoid the path redundancy caused by the MN's data packets not being optimized by the route. The remaining problem can also avoid the problem that the packet forwarding point is easy to single point failure because the MN's data packet always passes through a certain packet forwarding point.

However, the route optimization function in the above-mentioned DMM system is automatically performed when the path of the data packet is redundant, and cannot be used in certain specific communication scenarios, such as lawful interception and service charging.

Summary of the invention

Embodiments of the present invention provide a method, apparatus, and system for controlling route optimization, which can be used to control a route optimization channel of distributed mobility management in real time.

In order to achieve the above object, embodiments of the present invention use the following technical solutions:

In a first aspect, a method for controlling route optimization is provided, where the method is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a CMR attached to a mobile node MN and a CN peer of a communication peer node CN. The RO channel between the CMRs, the method includes:

The first device acquires the first routing control information, where the first device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the first routing control information is used to indicate that the RO channel is removed. ; The first device sends the first routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN is removed from the RO channel.

With the first aspect, in a first possible implementation, in a case that the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the method further includes:

The first device acquires second routing control information, where the second routing control information is used to indicate that the RO channel is established;

The first device sends the second routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN establishes the RO channel.

With the first aspect or the first possible implementation of the first aspect, in a second possible implementation, the method further includes:

The first device determines an HLM of the CN from a target address corresponding to the data packet sent by the MN.

In conjunction with the second possible implementation of the first aspect, in a third possible implementation, the method further includes:

The first device acquires an address of the CN attached CMR from the HLM of the CN.

In a second aspect, a method for controlling route optimization is provided, where the method is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a current mobile router CMR and a communication peer attached to the mobile node MN. The RO channel between the CMRs attached to the node CN, including:

The CMR attached to the MN or the CMR attached to the CN receives the first routing control information sent by the first device, where the first device is the home location manager HLM of the MN or the home mobile router HMR of the MN, The first routing control information is used to indicate that the RO channel is removed;

The CMR to which the MN is attached or the CMR to which the CN is attached removes the RO channel according to the first routing control information. With reference to the second aspect, in a first possible implementation, in a case that the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the method further includes:

The CMR to which the MN is attached or the CMR to which the CN is attached receives the second routing control information sent by the first device, where the second routing control information is used to indicate that the RO channel is established;

The CMR attached to the MN or the CMR attached to the CN establishes the RO channel according to the second routing control information.

In a third aspect, an information forwarding apparatus is provided. The information forwarding apparatus is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a CMR attached to a mobile node MN and a CN peer of a communication peer node. The RO channel between the CMRs, wherein the information forwarding device is the home location manager HLM of the MN or the home mobile router HMR of the MN, the device includes: a receiving unit, configured to acquire the first routing control Information, the first routing control information is used to indicate that the RO channel is removed;

a sending unit, configured to send the first routing control information received by the receiving unit to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN is removed. Said RO channel.

With reference to the third aspect, in a first possible implementation, in a case where the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the receiving unit of the device is further configured to:

Obtaining second routing control information, where the second routing control information is used to indicate that the RO channel is established;

The transmitting unit of the device is further configured to:

Transmitting the second routing control information received by the receiving unit to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached by the MN or the CMR attached by the CN establishes the RO channel.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation, the apparatus further includes: And a searching unit, configured to determine an HLM of the CN from a target address corresponding to the data packet sent by the MN.

In conjunction with the second possible implementation of the third aspect, in a third possible implementation, the apparatus further includes:

And an obtaining unit, configured to acquire, by the HLM of the CN determined by the searching unit, an address of the CMR to which the CN is attached.

In a fourth aspect, a routing control apparatus is provided, where the routing control apparatus is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a current mobile router CMR and a communication peer attached to the mobile node MN. The RO channel between the CMRs to which the node CN is attached, where the routing control device is the CMR to which the MN is attached or the CMR to which the CN is attached, the routing control device includes: a receiving unit, configured to receive the information forwarding device First routing control information, the information forwarding device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the first routing control information is used to indicate that the RO channel is removed;

And a processing unit, configured to remove the RO channel according to the first routing control information received by the receiving unit.

With reference to the fourth aspect, in a first possible implementation, in a case that the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the receiving unit of the device is further configured to:

Receiving, by the information forwarding device, second routing control information, where the second routing control information is used to indicate that the RO channel is established;

The processing unit of the device is further configured to:

And establishing the RO channel according to the second routing control information received by the receiving unit. In a fifth aspect, a system for controlling route optimization is provided, including:

At least one information forwarding device and at least one routing control device, wherein the information forwarding device and the routing control device are capable of information interaction;

The information forwarding device is the information forwarding device according to any one of the third aspect or the third aspect, wherein the routing control device is a fourth party The routing control device of any of the possible implementations of the fourth aspect. In the above solution, the first device acquires the first routing control information, and the first device sends the first routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN is removed. RO channel. Due to certain specific scenarios, such as lawful interception, service charging, etc., the use of the RO channel may result in inaccurate path of the interception or large error in the service billing, and the data of the MN may be performed on the original channel without the RO. In the above solution provided by the embodiment, the control of the route optimization channel of the distributed mobility management can be realized by closing the RO channel in real time to meet the requirements of certain specific scenarios.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

FIG. 1 is a schematic structural diagram of a DDM network system according to an embodiment of the present invention; FIG.

2 is a schematic flowchart of a method for controlling route optimization according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a method for controlling route optimization according to another embodiment of the present invention; FIG.

4 is a signaling interaction diagram of a method for controlling route optimization according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a signaling interaction of a method for controlling route optimization according to another embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of a signaling interaction of a method for controlling route optimization according to another embodiment of the present invention; FIG.

FIG. 7 is a signaling interaction diagram of a method for controlling route optimization according to still another embodiment of the present invention; FIG. 8 is a signaling interaction diagram of a method for controlling route optimization according to another embodiment of the present invention;

FIG. 9 is a schematic diagram of a signaling interaction of a method for controlling route optimization according to another embodiment of the present invention; FIG.

FIG. 10 is a signaling interaction diagram of a method for controlling route optimization according to another embodiment of the present invention; FIG.

FIG. 11 is a schematic structural diagram of an information forwarding apparatus according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of an information forwarding apparatus according to another embodiment of the present invention; FIG.

FIG. 13 is a schematic structural diagram of a route control apparatus according to an embodiment of the present invention; FIG.

FIG. 14 is a schematic structural diagram of an information forwarding apparatus according to still another embodiment of the present invention; FIG.

FIG. 15 is a schematic structural diagram of a route control apparatus according to another embodiment of the present invention; FIG.

FIG. 16 is a schematic diagram of a control route optimization system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiment of the present invention is applied to a distributed mobility management DDM network system. Referring to FIG. 1 , the DDM network system is mainly composed of a home location management (HLM) of a mobile device MN and a home mobile router of the MN. (Home Mobility Router, referred to as HMR), Current Mobility Router (CMR) attached to MN, and CMR mobile path attached to CN It consists of a device and a location manager. The HLM of the MN is used to store and monitor the location information and status information of the MN. In this case, the HLM of the MN assigns a home address (Home of Address, ΗοΑ) to the MN, and the ΗοΑ is the session address of the data route; the HRM of the MN is responsible for intercepting the data. Packet, and route the intercepted packet to the MN. The DMM system uses the route optimization RO function to establish an RO channel between the CMR attached to the mobile node MN and the CMR attached to the communication peer node CN, wherein each RO channel corresponds to one HoA.

The present invention provides a method for controlling route optimization. Referring to FIG. 2, the method is used in a distributed mobility management DMM system. The DMM system uses a route optimization RO function to establish a CMR and a communication peer node attached to the mobile node MN. The RO channel between the CN attached CMRs includes the following steps:

101. The first device acquires first routing control information.

The first device is the HLM of the MN or the HRM of the MN, and the first routing control information is used to indicate that the RO channel is removed. The first routing control information is used by the Operation Administration and Maintenance (OAM) and the listening server. , billing server or other network element to send. The first routing control information may be an event for indicating the removal of the R0 channel, for example, lawful interception, service charging, and the like.

Specifically, if the parameter in the first routing control information is the same as the corresponding parameter in the route optimization state information stored in the first device, the first routing control information is ignored, that is, the R0 channel is not controlled. That is, if the first device obtains the first routing control information, it determines whether the route optimization state information indicates that the R0 channel has been removed. If the route optimization status information indicates that the R0 channel has been removed, the first device does not need to remove the R0 channel after receiving the first routing control information. If the routing optimization status information indicates that the R0 channel is not removed, the first device receives the first routing control information and then removes the R0 channel. Further, the first device may report that the 0AM of the first routing control information, the monitoring server, the accounting server, or other network element reports that the R0 channel has been removed or successfully removed.

If the parameters in the first routing control information are different from the corresponding parameters in the route optimization state information stored in the first device, the parameters in the stored route optimization state information are changed to be the same, and the R0 is continuously controlled. . 102. The first device sends the first routing control information to the CMR attached to the MN or the CMR attached to the CN.

The RO channel is removed by a CMR to which the MN is attached or a CMR to which the CN is attached.

103. The CMR attached to the MN or the CMR attached to the CN receives the first routing control information sent by the first device.

The first device is an HLM of the MN or an HMR of the MN, and the first routing control information is used to indicate that the RO channel is removed.

104. The CMR attached to the MN or the CMR attached to the CN removes the RO channel according to the first routing control information.

In the above embodiment, the first device acquires the first routing control information, and the first device sends the first routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN is removed. The RO channel. It can realize the demolition control of the route optimization channel for distributed mobility management.

Optionally, as shown in FIG. 3, in the case that the RO channel is not established between the CMR attached to the MN and the CMR of the CN, the RO channel is first established before the RO channel is removed, and the method includes:

201. The first device acquires second routing control information.

The second routing control information is used to indicate that an RO channel is established. The second routing control information is sent by the OAM, the listening server, the accounting server, or other network elements.

Specifically, if the parameter in the second routing control information is the same as the corresponding parameter in the route optimization state information stored in the first device, the second routing control information is ignored, that is, the RO is not controlled. If the parameters in the second routing control information are different from the corresponding parameters in the route optimization state information stored in the first device, the parameters in the stored route optimization state information are changed to be the same, and the RO is further controlled. .

That is, if the first device obtains the second routing control information, it determines whether the route optimization state information indicates that the RO channel has been removed. If the route optimization status information indicates that the RO channel has been removed, the first device receives the first route control information, and then establishes an RO channel. If the route optimization status information indicates that the RO channel is not removed After the first device receives the first routing control information, the R0 channel does not need to be established. Further, the first device may report whether the R0 channel is successfully established by transmitting the 0AM of the first routing control information, the monitoring server, the accounting server, or other network element.

202. The first device sends the second routing control information to the CMR to which the MN is attached or the CMR to which the CN is attached.

The RO channel is established by a CMR to which the MN is attached or a CMR to which the CN is attached.

203. The CMR attached to the MN or the CMR attached to the CN receives the second routing control information sent by the first device.

The second routing control information is used to indicate that the RO channel is established;

204. The CMR attached to the MN or the CMR attached to the CN establishes the RO channel according to the second routing control information.

In the above embodiment, the first device acquires the second routing control information, and the first device sends the second routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN is established. The RO channel. It can realize the establishment control of the route optimization channel for distributed mobility management.

Optionally, the embodiment of the present invention provides a method for controlling route optimization, which is shown in FIG. 4 (of course, only the key features in the steps are given in the drawings, which are specifically described in the embodiments), including The following steps:

301. The HLM of the MN acquires the first/second routing control information of the granularity of the Internet Protocol (IP).

The first/second routing control information refers to the first routing control information or the second routing control information, which is not described in the following embodiments.

Specifically, the parameter of the first routing control information of the IP granularity at least includes: a mobile device identifier (Mobile Node Identity, MNID for short), the MNID can identify the identity of the MN in the network, and the status information of the MN (MN- Status), the status information of the MN includes establishing a route optimization channel (MN_Status_Open) between the CMR attached to the MN and the CMR attached to the CN or removing the route optimization channel between the CMR attached to the MN and the CMR attached to the CN ( MN—Status— Close ); at least one MN's home IP address HoAx, X represents the HoA number; HoAx status letter Ho Ax—Status, Ho Ax status information includes the removal of the HoAx-Status-Close channel corresponding to Ho Ax.

The parameter of the second routing control information of the IP granularity at least includes: a mobile device identity (Mobile Node Identity, MNID for short), the MNID can identify the identity of the MN in the network, and the MN status information (MN_Status), The status information of the MN includes establishing a route optimization channel (MN_Status_Open) between the CMR attached to the MN and the CMR attached to the CN or removing the route optimization channel between the CMR attached to the MN and the CMR attached to the CN (MN_Status) — Close ); At least one MN's home IP address HoAx, X represents the HoA number; HoAx status information (Ho Ax—Status), HoAx status information includes the HoAx-Status-Open corresponding to the HoAx.

The first/second routing control information of the IP granularity can control the route optimization channel corresponding to the IP address (HoAx), wherein the IP address has at least one, that is, the first routing control information can control multiple IP granularity routes. Optimize the channel.

Optionally, the parameter of the first/second routing control information may further include: an identity of the home mobile router (identity, referred to as ID), and the specific form of the ID is an IP address or a Domain Name System (DNS). Domain name; the ID of the current mobile router.

When the first/second routing control information is IP granularity, it needs to be determined: the MN identity MNID, the MN state information, the MN's home IP address HoAx and HoAx state information, and the route optimization state information stored in the MN's HLM. Whether the corresponding parameters are consistent and the inconsistent parameters are updated consistently. If the parameters are consistent, the first routing control information is ignored, that is, the RO is not controlled.

302. The HLM of the MN sends the first/second routing control information information to the CMR attached to the MN.

Optionally, the MN's HLM may also send the first/second routing control information to the MN attached CMR through the MN's HRM, which is indicated by a dashed arrow in the figure.

303. The CMR attached to the MN removes/establishes the RO channel according to the first/second routing control information. The RO channel is removed/established according to the first/second routing control information. The RO channel is removed according to the first routing control information, and the RO channel is established according to the second routing control information, which is not described in the following embodiments.

The first/second routing control information may be IP granularity control information. When the status information of the MN is MN_Status_Open, the status information of the HoAx is HoAx—Status—Open represents establishing a route optimization channel corresponding to the HoAx. The status information of the HoAx is HoAx—Status—Close represents the route optimization channel corresponding to the removal of the HoAx. When the status information of the MN is MN—Status—Close, the status information of the HoAx is HoAx—Status—Open cannot establish the route optimization channel. That is, HoAx—Status—Open is an empty command, and the status information of HoAx is HoAx—Status—Close represents the route optimization channel corresponding to the removal of HoAx.

After the route optimization channel is established, the CN-attached CMR that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached by the MN, thereby implementing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN to the route-optimized channel of the CMR cannot be received from the CMR attached to the MN, and the data of the CMR attached to the CN via the MN attached to the CN will flow back. The HMR of the MN is transmitted to the CMR attached to the CN through the HMR of the MN, and the data is transmitted to the CN by the CMR attached to the CN.

Optionally, a method for controlling route optimization is provided. Referring to FIG. 5, the method includes the following steps:

401. The HLM of the MN acquires first/second routing control information of the MN granularity. The first/second routing control information refers to the first routing control information or the second routing control information.

Specifically, the parameter of the first routing control information of the MN granularity includes at least: an identifier of the MN, a MNID, and status information of the MN, and the status information of the MN includes: a route optimization channel (MN_Status_Close) for removing the CMR attached to the MN.

The parameter of the first routing control information of the MN granularity includes at least: the identifier MNID of the MN; the status information of the MN, and the status information of the MN includes: establishing a route optimization channel (MN_Status_Open) of the CMR mobile device to which the MN is attached. The first routing control information of the MN granularity controls all routing optimization channels of the designated mobile device.

Optionally, the parameters of the first/second routing control information may further include: a home mobile router ID, where the ID is specifically an IP address or a DNS domain name; and an ID of the current mobile router.

When the first/second routing control information is MN granularity, it is required to determine whether the MN's identity MNID, the MN's state information, and the corresponding parameter in the route optimization state information stored in the MN's HLM are consistent, and the inconsistent parameter is updated. Consistently, if the parameters are consistent, the first routing control information is ignored, that is, the RO is not controlled.

402. The HLM of the MN sends the first/second routing control information information to the CMR attached to the MN.

403. The CMR attached to the MN removes/establishes the RO channel according to the first/second routing control information.

Deleting/establishing the RO channel according to the first/second routing control information: removing the RO channel according to the first routing control information, and establishing an RO channel according to the second routing control information,

Since the first/second routing control information may be the control control of the MN granularity, when the status information of the MN is MN_Status-Open, all HoAx (HoA l , ΗοΑ2, ..., ΗοΑη) corresponding to the MN are established. Route optimization channel. When the status information of the ΜΝ is MN_Status_Close, all the route optimization channels corresponding to Ho Ax ( HoA l , ΗοΑ2 , ... , ΗοΑη ) in the MN are removed. The RO channel corresponding to all HoAx ( HoA l , ΗοΑ2 , ... , ΗοΑη ) in the MN is all RO channels of the CMR attached to the MN.

404. After the RO is established or removed, the MN's HLM sends the parameters in the first/second routing control information to the other HLMs and HRMs of the MN.

In order for the other HLMs and HRMs of the MN to update the stored route optimization status information according to the parameters in the first/second routing control information. After the route optimization channel is established, the CMR attached to the CMN that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby implementing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN to the route-optimized channel of the CMR cannot be received from the CMR attached to the MN, and the data of the CMR attached to the CN via the MN attached to the CN will flow back. The HMR of the MN is transmitted to the CMR attached to the CN through the HMR of the MN, and the data is transmitted to the CN by the CMR attached to the CN.

Optionally, a method for controlling route optimization is provided. Referring to FIG. 6, the method includes the following steps:

501. The HRM of the MN obtains the first/second routing control information of the IP granularity.

The first/second routing control information of the IP granularity is specifically described in step 301, and will not be described herein.

When the first/second routing control information is IP granularity, it needs to be determined: the MN identity MNID, the MN state information, the MN's home IP address HoAx and HoAx state information, and the route optimization state information stored in the MN's HRM. Whether the corresponding parameters are consistent and the inconsistent parameters are updated consistently. If the parameters are consistent, the first routing control information is ignored, that is, the RO is not controlled.

The HRM of the MN also needs to report the parameters in the first/second routing control information to the HLM of the MN, so that the HLM of the MN updates the stored route optimization status information according to the parameters in the first/second routing control information.

502. The HRM of the MN sends the first/second routing control information information to the CMR attached to the MN.

503. The CMR attached to the MN removes/establishes the RO channel according to the first/second routing control information.

The specific manner of removing/establishing the RO channel of the first/second routing control information of the IP granularity is specifically described in step 303, and details are not described herein again.

After the route optimization channel is established, the CMR attached to the CMN that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby implementing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN Neither the CN attached to the route optimization channel can receive data from the CMR attached to the MN. The data of the CMR attached to the CN via the MMN attached to the CN will flow back to the HMR of the MN, and then transmitted to the CMR attached to the CN through the HMR of the MN. , the CMR attached by the CN transmits the data to the CN.

Optionally, a method for controlling route optimization is provided. Referring to FIG. 7, the method includes the following steps:

601. The HRM of the MN acquires the first/second routing control information of the MN granularity. Specifically, the first/second routing control information of the MN granularity is specifically described in step 401, and details are not described herein again.

602. The HRM of the MN sends the first/second routing control information information to the CMR attached to the MN.

603. The CMR attached to the MN removes/establishes the RO channel according to the first/second routing control information.

The specific manner of dismantling/establishing the RO channel of the first/second routing control information of the MN granularity is specifically described in step 403, and details are not described herein again.

604. After the RO is established or removed, the HRM of the MN sends the parameters in the first/second routing control information to the other HLMs and HRMs of the MN.

In order for the other HLMs and HRMs of the MN to update the stored route optimization status information according to the parameters in the first/second routing control information.

Optionally, a method for controlling route optimization is provided. Referring to FIG. 8, the method includes the following steps:

701. The HRM of the MN obtains the first/second routing control information of the IP granularity.

The first/second routing control information of the IP granularity refers to the specific description in step 301, and details are not described herein again.

702. The HRM of the MN determines the HLM of the CN from the target address corresponding to the data packet sent by the MN.

703. The HRM of the MN obtains the address of the CMR attached to the CN from the HLM of the CN. Thus, the MN's HRM gets the address of the CN attached CMR.

704. The HRM of the MN sends the first/second routing control information information to the CMR attached to the CN.

705. The CN attached CMR removes/establishes the RO channel according to the first/second routing control information.

After the route optimization channel is established, the CMR attached to the CMN that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN. And achieve route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN to the route-optimized channel of the CMR cannot be received from the CMR attached to the MN, and the data of the CMR attached to the CN via the MN attached to the CN will flow back. The HMR of the MN is transmitted to the CMR attached to the CN through the HMR of the MN, and the data is transmitted to the CN by the CMR attached to the CN.

Optionally, a method for controlling route optimization is provided. Referring to FIG. 9, the method includes the following steps:

801. The HLM of the MN obtains the first/second routing control information of the IP granularity.

802. The MN's HLM sends the first/second routing control information to the MN's HRM.

803. The HRM of the MN determines the HLM of the CN from the target address corresponding to the data packet sent by the MN.

804. The HRM of the MN obtains the address of the CMR attached to the CN from the HLM of the CN. Thus, the MN's HRM gets the address of the CN attached CMR.

805. The HRM of the MN sends the first/second routing control information information to the CMR attached to the CN.

806. The CMR attached to the CN removes/establishes the RO channel according to the first/second routing control information.

The first/second routing control information of the IP granularity is removed/established by the RO channel. The specific manner is specifically described in step 303, and details are not described herein again.

Optionally, a method for controlling route optimization is provided. Referring to FIG. 10, the method includes the following steps:

901. The HLM of the MN acquires the first/second routing control information of the IP granularity.

902. The HRM of the MN determines the HLM of the CN from the target address corresponding to the data packet sent by the MN.

903. The HRM of the MN obtains the address of the CMR to which the CN is attached from the HLM of the CN.

904. The HRM of the MN sends the address of the CMR attached to the CN to the HLM of the MN. Thus, the MN's HLM gets the address of the CN attached CMR.

905. The HLM of the MN sends the first/second routing control information information to the CMR attached to the CN.

906. The CMR attached to the CN is removed according to the first/second routing control information. Establish an RO channel.

As described above, the first device acquires the first or second routing control information, and the first device sends the first or second routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN is described. The CN attached CMR removes or establishes the RO channel. It can realize the control of the route optimization channel for distributed mobility management.

The present invention provides an information forwarding device 1000. Referring to FIG. 11, the information forwarding device 1000 is used in a distributed mobility management DMM system. The DMM system uses the route optimization RO function to establish a CMR and communication pair attached to the mobile node MN. The RO channel between the CMRs to which the end node CN is attached, where the information forwarding device 1000 is the HLM of the MN or the HMR of the MN, and the information forwarding device 1000 includes: a receiving unit 1001, configured to acquire the first routing control Information, the first routing control information is used to indicate that the RO channel is removed.

Alternatively, in the case that no RO channel is established between the CMR attached to the MN and the CMR of the CN, the receiving unit 1001 is further configured to:

Acquiring the second routing control information, where the second routing control information is used to indicate that the RO channel is established.

The first/second routing control information is sent by the OAM or the interception server, the accounting server, or other network elements.

Specifically, if the parameter in the first/second routing control information is the same as the corresponding parameter in the route optimization state information stored in the information forwarding device 1000, the first/ignorance is omitted. The second routing control information, that is, does not control the RO.

If the parameters in the first/second routing control information are different from the corresponding parameters in the route optimization state information stored in the information forwarding device 1000, the parameters in the stored route optimization state information are changed to be the same, and the parameters are continued. Control the RO.

Further, including:

The sending unit 1002 is configured to send the first routing control information received by the receiving unit 1001 to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN removes the RO channel.

Alternatively, in the case that no RO channel is established between the CMR attached to the MN and the CMR of the CN, the transmitting unit 1002 is further configured to:

The second routing control information received by the receiving unit 1001 is sent to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN establishes an RO channel.

When the information forwarding device 1000 is the HLM of the MN, the first/second routing control information may also be sent to the CMR attached to the MN or the CMR attached to the CN through the HRM of the MN.

Optionally, referring to FIG. 12, the information forwarding apparatus 1000 further includes: a searching unit 1003, configured to determine an HLM of the CN from a target address corresponding to the data packet sent by the MN.

The obtaining unit 1004 is configured to obtain an address of the CN attached to the CN from the HLM of the CN determined by the searching unit 1003.

When the information forwarding device 1000 is the HRM of the MN, the HRM of the MN can also send the address of the CMR attached to the CN to the HLM of the MN.

After the route optimization channel is established, the CMR attached to the CMN that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby implementing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN to the route-optimized channel of the CMR cannot be received from the CMR attached to the MN, and the data of the CMR attached to the CN via the MN attached to the CN will flow back. The HMR of the MN is transmitted to the CMR attached to the CN through the HMR of the MN, by the CN. The attached CMR transmits the data to the CN.

In the information forwarding device, the first/second routing control information is obtained, and the first/second routing control information is sent to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN The RO channel is removed/established. It can realize the control of the route optimization channel for distributed mobility management.

The present invention provides a routing control apparatus 1 100. Referring to FIG. 13, the information forwarding apparatus 1 100 is used in a distributed mobility management DMM system, and the DMM system uses the route optimization RO function to establish a CMR and communication attached to the mobile node MN. The RO channel between the CMRs to which the end node CN is attached, where the routing control device is the CMR to which the MN is attached or the CMR to which the CN is attached, and the routing control device 1 100 includes:

The receiving unit 1 101 is configured to receive first routing control information sent by the information forwarding device 1100, where the information forwarding device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the first routing control information is used to indicate that the RO is removed. aisle.

Alternatively, in the case that no RO channel is established between the CMR attached to the MN and the CMR of the CN, the receiving unit 1 101 is further configured to:

And receiving second routing control information sent by the information forwarding device, where the second routing control information is used to indicate that the RO channel is established.

Further, the processing unit 1102 is configured to remove the RO channel according to the first routing control information received by the receiving unit 1101.

Alternatively, in the case that no RO channel is established between the CMR attached to the MN and the CMR of the CN, the processing unit 1102 is further configured to:

And establishing the RO channel according to the second routing control information received by the receiving unit 1101.

After the route optimization channel is established, the CMR attached to the CMN that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby implementing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN to the route-optimized channel of the CMR can not receive data from the CMR attached to the MN, and the data of the CMR attached to the CN through the CMR attached to the MN will flow. The HMR back to the MN is transmitted to the CMR attached to the CN through the HMR of the MN, and the CMR attached by the CN transmits the data to the CN.

In the above routing control apparatus, the CMR attached to the MN or the CMR attached to the CN receives the first/second routing control information sent by the information forwarding device, and the CMR attached to the MN or the CMR attached to the CN is removed according to the first/second routing control information/ Establish the RO channel. It can realize the control of the route optimization channel for distributed mobility management. The embodiment of the present invention provides an information forwarding apparatus 1200. Referring to FIG. 14, the information forwarding apparatus 1200 is used in a distributed mobility management DMM system, and the DMM system uses the route optimization RO function to establish a CMR and communication attached to the mobile node MN. The RO channel between the CMRs to which the peer node CN is attached, where the routing control device is the CMR attached to the MN or the CMR attached to the CN, and the routing control apparatus 1200 includes: a processor 1201, a receiver 1202 The transmitter 1203, the memory 1204, and the bus 1205, wherein the processor 1201, the receiver 1202, and the transmitter 1203 are connected by a bus 1205, and the memory 1204 is configured to store data processed by the processor.

The bus 1205 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component) bus, or an EISA (Extended Industry Standard Architecture) bus. The bus 1205 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 14, but it does not mean that there is only one bus or one type of bus. Its towel:

Memory 1204 is for storing executable program code, the program code including computer operating instructions. Memory 1204 may include high speed RAM memory and may also include non-volatile memory, such as at least one disk storage device.

The processor 1201 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more configured to implement the embodiments of the present invention. integrated circuit.

The receiver 1202 is configured to obtain first routing control information, where the first routing control information is used to indicate that the RO channel is removed.

Alternatively, in the case where no RO channel is established between the CMR attached to the CN and the CMR of the CN, the receiver 1202 is further configured to: Obtaining second routing control information, where the second routing control information is used to indicate establishment

RO channel.

Specifically, if the parameters in the first/second routing control information are the same as the corresponding parameters in the route optimization state information stored in the information forwarding device 1200, the first/second routing control information is ignored, that is, the RO is not controlled.

If the parameters in the first/second routing control information are different from the corresponding parameters in the route optimization state information stored in the information forwarding device 1200, the parameters in the stored route optimization state information are changed to be the same, and the parameters are continued. Control the RO.

Further, including:

The transmitter 1203 is configured to send the received first routing control information to the MN attached CMR or the CN attached CMR, so that the MN attached CMR or the CN attached CMR removes the RO channel.

Alternatively, in the case where no RO channel is established between the CMR attached to the MN and the CMR of the CN, the transmitter 1203 is further configured to:

The second routing control information received by the receiver 1202 is sent to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN establishes an RO channel.

When the information forwarding device 1200 is the HLM of the MN, the first/second routing control information may also be sent to the CMR attached to the MN or the CMR attached to the CN through the HRM of the MN.

Optionally, the processor 1201 of the information forwarding device 1200 is configured to:

The HLM of the CN is determined from the destination address corresponding to the data packet sent by the MN.

Also used to: obtain the address of the CN attached CMR from the determined HLM of the CN. When the information forwarding device 1200 is the HRM of the MN, the HRM of the MN can also send the address of the CMR attached to the CN to the HLM of the MN.

The present invention provides a routing control apparatus 1300. Referring to FIG. 15, the routing control apparatus 1300 is used in a distributed mobility management DMM system. The DMM system uses the route optimization RO function to establish a CMR and a communication peer attached to the mobile node MN. An RO channel between the CMRs to which the node CN is attached, where the routing control device 1300 is a CMR attached to the MN or a CMR attached to the CN, and the routing control apparatus 1300 includes: a processor 1301, a receiver 1302 The transmitter 1303, the memory 1304, and the bus 1305, wherein the processor 1301, the receiver 1302, and the transmitter 1303 are connected by a bus 1305, and the memory 1304 is configured to store data processed by the processor.

The bus 1305 can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component) bus, or an EISA (Extended Industry Standard Architecture) bus. The bus 1305 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 15, but it does not mean that there is only one bus or one type of bus. among them:

Memory 1304 is for storing executable program code, the program code including computer operating instructions. Memory 1304 may include high speed RAM memory and may also include non-volatile memory, such as at least one disk memory.

The processor 1301 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one configured to implement an embodiment of the present invention. The receiver 1302 is configured to receive the first routing control information sent by the information forwarding device, where the information forwarding device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the first routing control information is used to indicate that the RO channel is removed.

Alternatively, in the case where no RO channel is established between the CMR attached to the MN and the CMR of the CN, the receiver 1302 is further configured to:

Further, the processor 1301 is configured to remove the RO channel according to the first routing control information received by the receiver 1302.

Alternatively, in the case that no RO channel is established between the CMR attached to the MN and the CMR of the CN, the processor 1301 is further configured to:

The RO channel is established based on the second routing control information received by the receiver 1302.

In the above routing control apparatus, the CMR attached to the MN or the CMR attached to the CN receives the first/second routing control information sent by the information forwarding device, and the CMR attached to the MN or the CMR attached to the CN is removed according to the first/second routing control information/ Establish the RO channel. It can realize the control of the route optimization channel for distributed mobility management.

The present invention provides a system 1400 for controlling route optimization. The system for controlling route optimization may be a DDM network system for distributed mobility management. For specific functions, refer to the description of the foregoing apparatus and method embodiments. Referring to FIG. Includes:

At least one information forwarding device (1401 - 1 , ..., 1401 -n ) and at least one a routing control device (1402-1, ..., 1402-n), wherein the information forwarding device and the routing control device are capable of information interaction;

The information forwarding device (1401-1, ..., 1401 - η) is the information forwarding device 1000 corresponding to FIG. 11 and FIG. 12, and the routing control device (1402-1, ..., 1402-n) is FIG. 13 corresponds to the current mobile router 1100.

Or the information forwarding device (1401-1, ..., 1401-n) is the information forwarding device 1200 corresponding to FIG. 14, and the routing control device (1402-1, ..., 1402-n) corresponds to FIG. Current mobile router 1300.

Each routing control device (1402-1, . . . , 1402-n) is connected to the mobile device to implement information interaction between the mobile devices. The specific functions of each device in the system are implemented by referring to the foregoing method and apparatus. The mobile device is a mobile node or a peer mobile node (not shown).

In the above system, the information forwarding device acquires the first routing control information, the routing control device receives the first/second routing control information sent by the information forwarding device, and the routing control device tears down/establishes the R according to the first/second routing control information. 0 channel. It enables control of route optimization channels for distributed mobility management.

Through the description of the above embodiments, it will be apparent to those skilled in the art that the present invention can be implemented in hardware, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted 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 location to another. A storage medium may be any available media that can be accessed by a computer. For example, but not limited to: the computer readable medium may include RAM (Random Access Memory), ROM (Read Only Memory), and EEPROM (Electrically Erasable Programmable Read Only Memory). CD-ROM (Compact Disc Read Only Memory) or other optical disc storage, disk storage media or other magnetic storage device, or can be used to carry or store in the form of instructions or data structures. Expected program code and can be counted Any other media accessed by the computer. Also. Any connection may suitably be a computer readable medium. For example, if the software is using coaxial cable, fiber optic cable, twisted pair,

DSL (Digital Subscriber Line) or wireless technology such as infrared, radio and microwave transmission from a website, server or other remote source, then coaxial cable, fiber optic cable, twisted pair, DSL or such as infrared, Wireless technologies such as wireless and microwaves are included in the fixing of the associated medium. Disks and discs as used in the present invention include CD (Compact Disc), laser disc, optical disc, DVD disc (Digital Versatile Disc), floppy disc and Blu-ray disc, wherein the disc is usually magnetically copied data, and The disc uses a laser to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

claims

1. A method for controlling route optimization, characterized in that the method is used in a distributed mobility management DMM system. The DMM system uses the route optimization RO function to establish the CMR attached to the mobile node MN and the communication counterpart node CN. Attaching RO channels between CMRs, the method includes:

The first device obtains the first routing control information. The first device is the home location manager HLM of the MN or the home mobile router HMR of the MN. The first routing control information is used to instruct the removal of the RO channel. ;

The first device sends the first routing control information to the MN-attached CMR or the CN-attached CMR, so that the MN-attached CMR or the CN-attached CMR removes the RO channel.

2. The method according to claim 1, characterized in that, in the case where the RO channel is not established between the CMR attached to the MN and the CMR of the CN, the method further includes:

The first device obtains second routing control information, and the second routing control information is used to indicate establishing the RO channel;

The first device sends the second routing control information to the MN-attached CMR or the CN-attached CMR, so that the MN-attached CMR or the CN-attached CMR establishes the RO channel.

3. The method according to any one of claims 1 or 2, characterized in that the method further includes:

The first device determines the HLM of the CN from the target address corresponding to the data packet sent by the MN.

4. The method according to claim 3, characterized in that the method further includes: the first device obtains the address of the CMR attached to the CN from the HLM of the CN.

5. A method for controlling route optimization, characterized in that the method is used in a distributed mobility management DMM system. The DMM system uses the route optimization RO function to establish a communication pair with the current mobile router CMR attached to the mobile node MN. End node CN RO channels between attached CMRs, including:

The CMR attached to the MN or the CMR attached to the CN receives the first routing control information sent by a first device, and the first device is the home location manager HLM of the MN or the home mobile router HMR of the MN, The first routing control information is used to instruct the removal of the RO channel;

The CMR attached to the MN or the CMR attached to the CN removes the RO channel according to the first routing control information.

6. The method according to claim 5, characterized in that, in the case where the RO channel is not established between the CMR attached to the MN and the CMR of the CN, the method further includes:

The CMR attached to the MN or the CMR attached to the CN receives the second routing control information sent by the first device, and the second routing control information is used to indicate establishing the RO channel;

7. An information forwarding device, characterized in that the information forwarding device is used in a distributed mobility management DMM system. The DMM system uses the route optimization RO function to establish the CMR to which the mobile node MN is attached and the communication counterpart node CN. RO channel between attached CMRs, wherein the information forwarding device is the MN's home location manager HLM or the MN's home mobile router HMR, and the device includes: a receiving unit, used to obtain the first route Control information, the first routing control information is used to instruct the removal of the RO channel;

A sending unit, configured to send the first routing control information received by the receiving unit to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN removes the CMR attached to the MN or the CMR attached to the CN. Describe the RO channel.

8. The device according to claim 7, wherein when the RO channel is not established between the CMR attached to the MN and the CMR of the CN, the receiving unit of the device is further configured to:

Obtain second routing control information, the second routing control information is used to indicate the establishment of the The RO channel;

The sending unit of the device is also used for:

The second routing control information received by the receiving unit is sent to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN establishes the RO channel.

9. The device according to any one of claims 7 or 8, characterized in that the device further includes:

A search unit is used to determine the HLM of the CN from the target address corresponding to the data packet sent by the MN.

10. The device according to claim 9, characterized in that the device further includes: an acquisition unit, configured to acquire the address of the CMR attached to the CN from the HLM of the CN determined by the search unit.

11. A routing control device, characterized in that the routing control device is used in a distributed mobility management DMM system. The DMM system uses the route optimization RO function to establish the current mobile router CMR and communication pair to which the mobile node MN is attached. The RO channel between the CMR attached to the end node CN, wherein the routing control device is the CMR attached to the MN or the CMR attached to the CN, and the routing control device includes:

The receiving unit is configured to receive the first routing control information sent by the information forwarding device. The information forwarding device is the home location manager HLM of the MN or the home mobile router HMR of the MN. The first routing control information is Remove the said RO channel upon instruction;

A processing unit, configured to remove the RO channel according to the first routing control information received by the receiving unit.

12. The device according to claim 11, wherein when the RO channel is not established between the CMR attached to the MN and the CMR of the CN, the receiving unit of the device is further configured to: :

Receive the second routing control information sent by the information forwarding device, the second routing control information is used to indicate the establishment of the RO channel;

The processing unit of the device is also used to: The RO channel is established according to the second routing control information received by the receiving unit.

13. A system for controlling route optimization, characterized by including:

At least one information forwarding device and at least one routing control device, the information forwarding device and the routing control device are capable of information exchange;

Wherein, the information forwarding device is the information forwarding device described in any one of claims 6-10, and the routing control device is the routing control device described in any one of claims 11 or 12.